arnold schwarzenegger, well, he says he is not perfect. we're going to take a look at why he is opening up. up your game. up the ante. and if you stumble, you get back up. up isn't easy, and we ought to know. we're in the business of up. everyday delta flies a quarter of million people while investing billions improving everything from booking to baggage claim. we're raising the bar on flying and tomorrow we will up it yet again. ♪ (train horn) vo: wherever our trains go, the economy comes to life. norfolk southern. one line, infinite possibilities. >>> the arnold schwarzenegger of the recall may be told, but it doesn't mean the memories are all sweet. the former california governor appeared "60 minutes" sunday night to promote his new book and to talk about his biggest regret. here's the story. >> i think it was the stupidest thing i've done in the whole relationship. >> reporter: it was a secret he kept from his wife, maria shriver, and the public for years. >> it was terrible. i inflicted tremendous pain on maria, and unbelievable pai